GO. Structure Structure Type Length ID of Structure N or '/ EDS
No >=05 p (Nonadb
F B C M >=5(j Chrys AmphitJole Nonasb Ambig/ND
‘ No ' Coord <5m Elements)
Struct = > 0,5n _> 5:1 Aspect Ratio Grid acceptance:
y'- Positive diffraction pattern properties conforming to <50% undissolved (ilter, overlapped or folded Totals
laboratory idenbfication criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped grid squares <5% F B C M >5u
-<'= EDS spectrum conforming to laboratory holes or opaque areas
identification criteria observed Chrysotile
^AMPHIBOLES Amphibole
F = Single Fiber Amosite
0 = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
Tremolite
M = Matrix Non-Identified
I Actinolite
NSD = No Structures Detected
CONFIDENTIAL, CITY_21MC100_003466940
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000180398
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000180398Source: NYC Law Department, mirrored locally
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 2002.
Laboratory report documenting transmission electron microscopy analysis of an air sample collected from a New York City Board of Education site on January 31, 2002.